Fair Value Measurements - Schedule of Financial Assets Measured at Fair Value on Nonrecurring Basis (OREO and Impaired Loans) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Assets and liabilities measured at fair value
OREO recorded at fair value	$ 5,351		$ 5,351		$ 5,351
Provision for loan losses			2,340	$ (2,450)
OREO
Assets and liabilities measured at fair value
OREO recorded at fair value	5,351		5,351		5,351
Impaired Loans
Assets and liabilities measured at fair value
Impaired loans, net of specific reserve	2,969		2,969		1,425
Provision for loan losses	38	$ 975	1,009	$ 3,149
Nonrecurring | OREO
Assets and liabilities measured at fair value
OREO recorded at fair value	5,351		5,351		5,351
Nonrecurring | OREO | Significant unobservable inputs (Level 3)
Assets and liabilities measured at fair value
OREO recorded at fair value	5,351		5,351		5,351
Nonrecurring | Impaired Loans
Assets and liabilities measured at fair value
Impaired loans, net of specific reserve	2,969		2,969		1,425
Nonrecurring | Impaired Loans | Significant unobservable inputs (Level 3)
Assets and liabilities measured at fair value
Impaired loans, net of specific reserve	$ 2,969		$ 2,969		$ 1,425